Data uplink encryption processing method and device, electronic equipment and storage medium

The embodiment of the invention relates to a data uplink encryption processing method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring encrypted electronic evidence sent by a data owner through a client, a keyword index corresponding to the encrypted electronic evidence and a digital signature of the keyword index; extracting the keyword index and the digital signature, and performing matching verification on the keyword index and the digital signature; and when the keyword index and the digital signature are successfully matched and verified, storing the encrypted electronic evidence to a cloud server and feeding back a data address for storing the encrypted electronic evidence to a client of the data owner. Therefore, the data owner executes fine-grained search authorization for the data user by using the attribute and encryption technology, and the search work of the keyword on the block chain is completed by using the searchable encryption technolo